Expects the complete set of column values: columns left out of column are cleared, so send every column that
should keep its value. Works both on a column attribute assigned to this category and on one inherited from a
parent category, in which case a CLA overriding it is created on this category. The propagation and mandatory
flags can be set here or with PATCH /catalogs/nodes/{id}/attributes/{attributeDefinitionId}, which handles
them for every definition type; locked is rejected because the lock flag is not supported for column
definitions.

Fails when the attribute definition is assigned neither on this category nor on any of its parents, or when it
is not a column definition. When a parent category has locked the attribute, the sent values are ignored without
an error.

The change is stored on the category immediately, while applying it to products runs as a background task. That
task covers the products in this category, and the products in its sub-categories only while propagation is on
for this attribute. The task ID is returned in the Resource-Id response header and Location points at
GET /async/status/{taskId}, which reports whether the propagation has finished.

For more detailed information on how to work with Category Level Attributes in Bluestone PIM, refer to our help
pages Category Level Attributes (CLA).